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The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming
May 2002 by W. Dan Hausel
The Keystone district includes a group of mineralized shear zones and veins that are associated with the Keystone Quartz Diorite in the Medicine Bow Mountains of southwestern Wyoming. Gold production from this district is unknown, although some estimates suggest that 7,500 to more than 12,000 ounces were produced.Our Readers Say
“...I appreciate the details on the economics of the operation.”
Melman on Gold & Silver
…for a change, it is time to turn away from the Trump-Mueller frenzy and concentrate once again on some of the other sources of information which can present us with valuable information related to our precious metals.
Ask the Experts—Why doesn't the 1872 Mining Law apply to all 50 states?
Q: In the Feb 2008 Mining Journal you ran an article, “Gold Deposits of North Carolina,” by Chris Ralph. The article states that the 1872 Mining Law does not apply in North Carolina and in fact only has merit in 19 of the 50 states. Can you explain how that could happen?
The St. Louis Gold District
In 1848 and 1849, miners had pushed all through the western Sierra foothills making many fantastic gold discoveries. The far north end of California’s Mother Lode country, however, had received little exploration.
Melman on Gold & Silver
It started out as a modest tropical depression near the Bahamas and was forecast to hit the east coast of Florida and then peter out over land. Then it was forecast to hit south Florida and strengthen moderately over the Gulf of Mexico before hitting the Florida Panhandle as perhaps a Category One hurricane.
Getting Your Float Circuit Layout Right
Commissioning is going well; ramp-up targets are all being met and the General Manager is happy. You arrive at the plant in the morning and start reviewing the night shift logs. What you discover is the night shift had to reduce feed to the mills...
Legislative and Regulatory Update
• Interior considers huge withdrawal in Arizona
• Travel Management Plans
• Roadless Rule has nine lives
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The Bawl Mill
• Our Readers Say
• California Wilderness Coalition and The Nature Conservancy Recruit Government Employees to Carry Out Huge Land Grab
• Drywashing Rules Clarified
• Mineralized Calderas in Colorado
• Picks & Pans: Mining Tungsten Ore—A Case History
• Gold in Oregon
• Aussie Gold—A Look at the Northern Territory
• The Phoenix Gold Mine: A Brief History
• Calico Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
